I do - the 5e PHB and DMG ^.^
A lot has happened since 3rd edition; realms have changed, and the way they wish to present the lore and details of various things has shifted and evolved. Older edition sources are considered deprecated until a contemporary current edition source book is released, and for 5e a Toril, or Forgotten Realms, source book will not BE released, Ever, because that is what the PHB and DMG Are, at least as far as races and creatures are concerned - for civilisation and culture lore, smaller, supplementary books are released to support the PHB and DMG, for Toril - such as SCAG - while whole campaign setting books are released for other realms (such as Erberron, and soon, Dragonlance).
As much as the core books for each edition are formally written in a setting agnostic way, Toril is the base plate for all other campaign settings. Other campaign settings discuss their features with focus being given most prominently to how and where they differ from the same things in a FR setting. Where no such variance is mentioned, it is presumed to match the Toril base. Like it or not, PGtF is a 3.5 source book, and so it is considered deprecated - the 5e PHB takes priority in cases of information overlap. The average heights of different races is one of those places where the lore descriptions have legitimately shifted over the intervening years.
